import java.util.Scanner;

public class java20 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int a[]=new int[n+1];
        int sum=0;
        for(int i=1;i<=n;i++)
        {
            a[i]=sc.nextInt();
            sum=sum+a[i];
        }
        System.out.println(sum);
    }
}
